/*
 * This file is part of GriefPrevention, licensed under the MIT License (MIT).
 *
 * Copyright (c) Ryan Hamshire
 * Copyright (c) contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package me.ryanhamshire.griefprevention.util;

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class WordFinder {

    private Pattern pattern;

    public WordFinder(List<String> wordsToFind) {
        StringBuilder patternBuilder = new StringBuilder();
        for (String word : wordsToFind) {
            patternBuilder.append("|(([^\\w]|^)" + Pattern.quote(word) + "([^\\w]|$))");
        }

        String patternString = patternBuilder.toString();
        if (patternString.length() > 1) {
            // trim extraneous leading pipe (|)
            patternString = patternString.substring(1);
        }

        this.pattern = Pattern.compile(patternString, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE);
    }

    public boolean hasMatch(String input) {
        Matcher matcher = this.pattern.matcher(input);
        return matcher.find();
    }
}
